Spin hydrodynamics and symmetric energy-momentum tensors - A current induced by the spin vorticity -

被引：95

作者：

Fukushima, Kenji ^{[1
]}

Pu, Shi ^{[2
]}

机构：

[1] Univ Tokyo, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan

[2] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Anhui, Peoples R China

来源：

PHYSICS LETTERS B | 2021年 / 817卷

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/j.physletb.2021.136346

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss a puzzle in relativistic spin hydrodynamics; in the previous formulation the spin source from the antisymmetric part of the canonical energy-momentum tensor (EMT) is crucial. The Belinfante improved EMT is pseudo-gauge transformed from the canonical EMT and is usually a physically sensible choice especially when gauge fields are coupled as in magnetohydrodynamics, but the Belinfante EMT has no antisymmetric part. We find that pseudo-transformed entropy currents are physically inequivalent in nonequilibrium situations. We also identify a current induced by the spin vorticity read from the Belinfante symmetric EMT. (C) 2021 The Authors. Published by Elsevier B.V.

引用

页数：5

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